学习要点
掌握词语
as well as除……之外 chemistry n. 某物质的化学组成、 communicate v.交流，交际
性质和反映，化学
fact n..事实 fighter n.战士；斗士 hardly adv.几乎不
leader n.领导者 let out 透露 life-giving adj.维持生命的
lot adv. 很；非常 mention v.提到；说到 natural adj. 天然的；自然的
notebook n.笔记簿 one another 互相 produce v.产生
quite a lot 相当多 suppose v.假定；猜想 sweet-smelling adj.有芳香味道的
underground adv.在地下 warn v.警告
认知词语
announce v. 宣布 arrange v. 安排 arrangement n. 安排
average n. 平均 belong v. 属于 belong to 属于
best-known adj. 最著名的 bush n. .灌木，灌木丛 chemical n. 化学物质
container n. 容器 gas n. 气体 hang-glide v. 滑翔
hose n. 软管，水龙带 item n. 项目；一则 magnolia n. 木兰；木兰树
nasty adj. 令人厌恶的 neatly adv .整洁地 oxygen n. 氧；氧气
pure adj. 纯净的，洁净的 release v .释放，放出 replace v. 更新；更换
seed n. 种子 signal n. 信号 sip v. 小口地喝，抿
sunbathe v. 沐日光浴；晒太阳 tortoise n.. 龟，陆龟 unpleasant adj. 令人不愉
快的；讨厌的
核心语言点
现在进行时态
不用于现在进行时态中的部分动词
功能与话题
/i/，/i:/与字母及字母组合
能力目标
索引的使用
用英语为报纸写户外休闲场所的报道
随堂讲解与练习
Lesson 1-2
重难点解析
1．What good are trees?树有什么好处？
good n. 意为“好处；一处；用处”。例如：
I’m only telling you this this for your own good.
我告诉你这个只是为了你好。
What’s the good of (=how does it help you) earningg all that money if you don’t have time to enjoy it?
要是没有时间去享受，赚这么多钱有什么用？
2．They make streets more beautiful and less noisy,but what else can they do?他们（树木）能美化街路，降低噪音，除此之外还能做什么呢？
else adv.意思是“其他的，别的”。用于疑问句或nothing,nobody,something,anything等之后。例如：
Ask someone else to help you.另请个人来帮帮你吧。
What else do you want to buy?还想买些什么？
3．Trees are natural air conditioners.树木是天然的空调。
natural adj. 意思是“自然的”。例如：
It’s our duty to protect the natural world.
保护自然界是我们的责任。
4．Trees cool the air as well as clean it.树木不仅能使空气变凉，更能净化空气。
as well as 引导并列复合句，意思是“和,也”。例如：
She is clever as well as beautiful.她既聪明又漂亮。（强调聪明）
He,as well as his sisters,is going to HK.他和他的姐妹们准备去香港。（强调他）
Mr Lee is not only a teacher but also a headmaster.他不仅是教师而且还是校长。（强调是校长）
5．For example,did you know that when insects attack a tree,it can warn its neighbours?比如说：当害虫侵袭一棵树的时候，这棵树能给它附近的树发出警告吗？
warn v. 意为“警告”。例如：
The sign of the warning warns us not to pass the bridge which is being repaired.
这个警告牌警告我们不要过那座正在修的桥。
6.The trees can then protect themselves by producing a chemical that makes their leaves taste nasty.树木能够通过产生一种化学物质使得树叶吃起来有极令人讨厌的味道来保护自己。
by producing a chemical that makes their leaves taste nasty做方式状语, that makes their leaves taste nasty是定语从句，修饰chemical.
protect sb by/from/against 意思是“保护，防护”。例如：
The man raised his arm to protect his face from the blow.
这个男人抬起胳膊挡住向他脸部打来的一拳。
Please wear a hat to protect your head against the sun.
请戴好帽子，免得头部遭到暴晒。
7．Trees are communicating with one another,but we don’t know how.树木时时彼此交流，但是我们不知道它们如何交流。
one another 意思是“互相”，做with 的宾语。
communicate with 意思是“和……交流”。例如：
If we want to communicate with foreigners,we must learn English well.
如果我们想和外国人交流，就必须学好英语。
8．Are trees in danger?树木有危险吗？
in danger 意思是“处于危险中”。例如：
The people in the burning house are in danger.
在着火房子里的人们正处于危险中。
9.We cut down and burn millions every year but we replace harldly any of them.我们每年砍伐、烧毁上百万棵树，但是我们几乎不补栽。
hardly ad. 意思是“几乎不（否定）”。例如：
hardly any of them (almost none of them ) 他们中几乎没有人
It hardly snows here in winter.这里的冬天几乎不下雪。
练习
一 单词拼写
根据所给中文的提示，写出英语单词的正确形式。
1.I haven’t spoken to anyone in English for days and that’s a ________.(事实)
2.Now that you _______ it,she did seem to be in a strange mood.(说到)
3.We _______ know each other.(几乎不)
4.Everyone should protect the _______ world.(自然的)
5.Price will go up,I _______.(猜想)
二 单项填空
从A、B、C、D中选出可以填入空白处的最佳选项。
（ ）1.Trees make streets more beautiful and _______.
A.noisy B.less noisy C.noisily D.more noisily
（ ）2.Why you are so ________ in Maths,Judy?
A.interested B.interesting C.interest D.good
（ ）3.Trees are ________ air conditioners.
A.nature B.nation C.natural D.national
（ ）4.It is said that the earth is _______ if human beings don’t protect it.
A.in a danger B.in dangerous C.danger D.in danger
（ ）5.Trees take _______ from the air,and release _______ into the air.
A.harmful gas,oxygen B. oxygen ,harmful gas
C.harmful oxygen,gas D.oxygen,oxygen
（ ）6.People are destroying their best fighters_______ pollution.
A. against B.by C.for D.in
( ) 7.One and a half hectares of trees could produce enhough oxygen to keep your whole
class _______ for a year.
A.live and health B.alive and healthy
C.alive and healthy D.live and healthy
（ ）8.Trees live _______ than people.
A.long B.much long C.much longer D.more longer
（ ）9.---Which kind of pollution do trees help to fight?
---_______.
A.air pollution B.noise pollution
C.water pollution D.all of above
（ ）10.There must be _______ in this wood.
A.else something B.anything else
C.something else D.else anything
三 完形填空
阅读短文，掌握其大意，然后从A、B、C、D中选出可以填入空白处的最佳选项。
The Earth - our home - is the only place we know of that can support life. It has （1）_______and water, both of which are （2）_______ for life,we can’t live without both of them. The processes that support life on Earth are in a （3）_______ balance. However, many people are （4）_______that pollution, human overpopulation and misuse（滥用）of resources(资源) may（5）_______this balance（平衡）and make the Earth （6）_______for plants, animals and people. In this section, we provide you （7）_______ knowledge about how we, humans, have harmed our planet and about（8）_______we need to do now to （9）_______it.Would you like _______ a volunteer to give us your hand?
（ ）1.A.gas B.oxygen C.coal D.sunshine
（ ）2.A.important B.necessary C.useful D.helpful
（ ）3.A.natrual B.natrue C.nation D.national
（ ）4.A.worried B.worry C.sorry D.sad
（ ）5.A.help B.destroy C.harm D.give
（ ）6.A.unsafe B.safe C.comfortable D.uncomfortable
（ ）7.A.with B.for C.to D.in
（ ）8.A.how B.whether C.if D.what
（ ）9.A.save B.ask for C.help D.do
（ ）10.A.be B.become C.to become D.grow
四 阅读理解
A
阅读短文，然后根据内容回答问题。
Pollution is the price we pay for an overpopulated, over industrialized (工业化的)planet. When you come to think about it, there are only four ways you can deal with rubbish: dump it（倾倒）, burn it, turn it into something you can use again, try to produce less of it. We keep trying all four methods, but the rubbish we produce worldwide can cover us.
Rubbish, however, is only part of the problem of polluting our planet. People need to produce cheap food,this makes a different kind of pollution. Industrialized farming methods（方法） produce cheap meat products: beef, pork and chicken. The use of pesticides （杀虫剂） and fertilizers（化肥） produces cheap grain（谷物） and vegetables. The price we pay for cheap food may be already too high: Mad（疯的） Cow Disease (BSE) in cattle, salmonella（沙门氏菌） in chicken and eggs, and wisteria（利斯特杆菌） in milk products. And if you think you'll not eat meat and become a vegetarian(素食者), you have to choose the very expensive vegetables,but when you think you're eating fresh salads and vegetables, or just having an innocent(纯净的) glass of water,you are having the pesticides every time,in fact.
1.How many ways do people usualy use to deal with rubbish?
_________________________________
2.Is rubbish the only pollution on the earth?
_________________________________
3.Why is the price we pay for cheap food may be already too high?
_________________________________
4.Is it safe for you if you only have vegetables instead of meat?
_________________________________
5.Can people use industrialized farming methods to produce cheap meat?
_________________________________
B
阅读短文，然后根据内容选择正确答案。
When you see the word dangerous, what do you think about? Fire? Guns? Broken glass? How about noises? Can noise be dangerous? Can it hurt you?Do you think it is a kind of pollution?
Most people would say that noise is loud, unwanted sound. They think of the roar of traffic, the scream of jet planes, and the howl of a sick animal. But what about rock music? Is the sound of music noise?
Sounds can be measured to find out how loud they are. Your hearing can also be measured. Tests were done on people who work with very loud machines for a long time. The tests showed that some of these people had a loss of hearing. People who race cars, fly jet planes, or play in rock bands may also have hearing problems.
Tests also show other changes in people who work in loud, noisy places. These changes can take place in the way people breathe or see or think or move or feel. Can noise be dangerous? Is it a kind of pollution？
（ ）6.To see how loud a sound is ,we must _______.
A.change it B.measure it
C.time it D.control
（ ）7.Tests show a loss of hearing in people who _______.
A.measure loud sounds
B.play rock music on their radios
C.work with very loud machines for a long time
D.drive cars
（ ）8.Which of the following can be dangerous?
A.All sounds B.Most sounds
C.Very loud sounds D.No sounds
（ ）9.Another title his story could be _______.
A.“Sounds Can Be Measured”
B.“Noise Can Be Dangerous”
C.“How To Test Your Hearing”
D.“Hearing is Important”
（ ）10.People who fly jet planes may have hearing problems.One reason may be that jets _______.
A.fly too fast
B.fly too high above the ground
C.make a loud noise on takeoff and landing
D.fly suddenly
Lesson 3-4 Language
重难点解析
1.We can use the present continuous tense to refer to things tht are happening now.Read the forms of the tense.现在进行时态指事情正在发生。看一下这个时态的构成：
We are destroying our best fighters against pollution.我们正在毁灭这些反污染的斗士。
现在进行时时表示正在进行的动作，通常由be动词+动词现在分词形式构成，可与now,at present, at this moment,these days等时间状语连用，也可不用时间状语。例如：
---What are you doing?
---I am reading.
He is not working.
Are they planting trees?
2.现在分词构成：
现在分词由词尾-ing构成，例如：
do---doing 词尾+ing
write---writing 结尾有不发音“e”,去“e”+ing
put---putting 重读闭音节，结尾只有一个辅音，双写这一辅音+ing
die-dying 结尾为ie，变ie为y+ing
3.Things to remember 要记住的知识
Remember these short forms:记住这些缩写形式:
I am ---I’m
He/She/It is ---He’s/She’s/It’s
We/They/You are ---We’re/They’re/You’re
What is --- What’s
4.We do not often use the verbs in the box below in the present continous tense.Instead,we use them in the simple present tense.
下面方框中的动词不宜用于现在进行时态中，因为他们表示状态和感觉，不能表示正在进行的动作，因而多用于一般现在时态中。
|
hear contain hate smell believe love belong think(=believe) see mean like taste know understand |
We say:I know the answer.(not:I am knowing the answer.)
Do you like milk? (not:Are you liking milk?)
They do not understand you.(not:They are not understanding you.)
This book belongs to May.(not:This book is belonging to May.)
5．现在进行时的其他用法：
1)现在进行时表示将来动作。
现在进行时常可用来表示将来的动作，特别是在口语中，这时常有一个表示未来时间的状语，多指已计划安排好的事。例如：
I’m meeting Peter tonight.He’s taking me to theatre.今晚我要和彼得见面，他将带我去看戏。
She’s flying to Hong Kong tomorrow.她明天飞香港。
2）be going to 结构可表示：
a.